How to Install Java Bouncy Castle Security Provider

January 2016 · 1 minute read

Bouncy Castle provides a lot of different security algorithms, but the usage is not well documented, so I will explain the basic steps to use it. First download library and then move it to your $JAVA_HOME path:

wget https://www.bouncycastle.org/download/bcprov-jdk15on-154.jar
sudo mv ~/Downloads/bcprov-jdk15on-154.jar $JAVA_HOME/jre/lib/ext

There are two option to use it:

Option 1: static Installation

Now add the following line to your $JAVA_HOME/jre/lib/security/java.security:

security.provider.N=org.bouncycastle.jce.provider.BouncyCastleProvider

Option 2: dynamic usage

You have to import the bouncy castle package and the security class and load the provider right before the usage (e.g. at the start of your main):

import java.security.Security;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

//...
public static void main(String[] args){
   Security.addProvider(new BouncyCastleProvider());
   // your code...
}

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